Re: Syslets, Threadlets, generic AIO support, v6
[Posted May 30, 2007 by corbet]
| From: |
| Ulrich Drepper <drepper-AT-redhat.com> |
| To: |
| Ingo Molnar <mingo-AT-elte.hu> |
| Subject: |
| Re: Syslets, Threadlets, generic AIO support, v6 |
| Date: |
| Wed, 30 May 2007 00:31:58 -0700 |
| Cc: |
| Jeff Garzik <jeff-AT-garzik.org>, Zach Brown <zach.brown-AT-oracle.com>,
linux-kernel-AT-vger.kernel.org,
Linus Torvalds <torvalds-AT-linux-foundation.org>,
Arjan van de Ven <arjan-AT-infradead.org>,
Christoph Hellwig <hch-AT-infradead.org>,
Andrew Morton <akpm-AT-zip.com.au>,
Alan Cox <alan-AT-lxorguk.ukuu.org.uk>,
Evgeniy Polyakov <johnpol-AT-2ka.mipt.ru>,
"David S. Miller" <davem-AT-davemloft.net>,
Suparna Bhattacharya <suparna-AT-in.ibm.com>,
Davide Libenzi <davidel-AT-xmailserver.org>,
Jens Axboe <jens.axboe-AT-oracle.com>,
Thomas Gleixner <tglx-AT-linutronix.de> |
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Ingo Molnar wrote:
> 3 months ago i verified the published kevent vs. epoll benchmark and
> found that benchmark to be fatally flawed. When i redid it properly
> kevent showed no significant advantage over epoll.
I'm not going to judge your tests but saying there are no significant
advantages is too one-sided. There is one huge advantage: the
interface. A memory-based interface is simply the best form. File
descriptors are a resource the runtime cannot transparently consume.
- --
⧠Ulrich Drepper ⧠Red Hat, Inc. ⧠444 Castro St ⧠Mountain View, CA â
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